Electric light fixture



May 2, y1933. w. P, cRocKr-:TT ET AL ELECTRIC LIGHT FIXTURE Filed Deo.5, 1930 3 Sheets-Sheet l Maly 2, 1933. w. P. CROCKETT ET AL 1,907,043

ELECTRI C LIGHT FIXTURE Filed Deo. 5, 1930 5 Sheets-Sheet 2 May 2, 1933.w, P 'CROCKETT ET AL- 1,907,043

ELECTRIC LIGHT FIXTURE Filed Dec. 5, 1950 3 Sheets-Sheet 5 47 we/z//b fgPatented May 2, 1933 @ETE VILLIAIJI P. CROCKETT AND WILLIAM E.CROCKECET, JR., OE ClCAG-G,

E13-N035 TG IOSEO, LNG, GF CHICAGG, l

istria ELECTRIC LGHT FIXTURE Application filed December 5, 1930. SerialNo, EQGE.

rllhe invention relates to electric light f1xtures, and particularly tothat type of fixture which may be removably attached to furniture, wallbraclzets or other supports.

The primary object of the invention is 'to provide an electric lightfixture which may be readily attached to or detached from a support soto furnish illumination to the user at the particular place or spotdesired, and the invention is therefore particularly applicable for usein hospitals, physicians, sur- ,geons7 and dentists offices where closeexaminations and explorations are frequently made and wh-ere portabilityof the lamp is desirable. rlfhe invention is also of particular utilityin laboratories, studios, garages, and in fact in any place where lightmust be brought close to the person or object to be examined. it will beobvious that the electric light fixture is also particularly adaptablefor use as a reading lamp.

Another object of the invention is to provide the fixture with meanswhereby one portion of the fixture may be firmly attached to anotherportion of the fixture and locked into place so that it cannot becasually separated or removed., and yet by properly manipulatingl thelocking` mechanism, the light fixture portion may be very readilydetached from the clampiirgl or supporting portion of the fixture.

A further object of the invention is to provide a structure which willmaintain the clamping` portion of the fixture and the handle andreflector portion thereof in locked relationship except on operation ofth-e locking` mechanism involving coacting` locking features in bothportions of the xture.

In connection with the detachable feature of the fixture to enable thelamp to be used as a hand lamp or portable lamp in connection withexaminations or explorations, it is an import-ant object of theinvention to be able to quickly and readily lift the lamp from itssupport, and quickly and readily replace it and lock it inposition, andtherefore the support and the lamp fixture are provided with spacedcoacting locking' means so that the lamp fixture may be. placed'at anyone of a plurality of positions in the holder and locked into piace, andthe reflector can thereupen be rotated 'to its desired position.

lt is a further oh ct of the invention to cri-case ne electric lifrhtsocket and 'the light cord in a cylinder adapted to serve the doublepurpose of providing a portion of the detach able locking` means andprovidingI a hande for the fixture so that the fixture may be readilygrasped, removed from its holding and clamlriing portion and brought tothe place or location for the examination and exploration by thephysician, surgeon, dentist, nurse, or other person.

fr further object of the invention is to combine a rotating` reflectorwith the handle so that the direction of the light rays may becontrolled.

lt is further object of the invention to construct the handle in such amanner that a. socket having` pull chains or cords for varying thevolume of light from the lamp may be used.

An additional object of the invention is to provide adjustable clampingmeans for the supporting` portion of the fixture so that th fixture maybe secured to any size or form of hed or other support.

A modified structure is shown and described, wherein the supporting`portion of the electric light fixture is permanently as sociated withand secured to a wall box, or fastened to the wall, or other place, asdesired, but allowing` the ready adjustment of the lamp with itsreflector and handle.

The invention will best be understood by reference to the accompanyingdrawings wherein the principle structure and the modification are shown,it being` understood that we do not limit ourselves to the exact construtions shown and illustrated but in the claims hereinafter set forthintend to cover all variations and modifications thereof.

ln the drawings:

Figure l shows an assembly and side view of the electric light fixturewith its clamp attached to the top rail of a bed,

Figure 2 is a disassembled view of the structure of Figure l and showsthe manner of handling` the portable portion of the fixture as well asthe clamping and supporting portion of the fixture,

Figure 3 is a horizontal sectional view of the clamping screws of thefixture on the line 3-3 of the right hand portion of F igure 2, l

Figure 4 is a longitudinal sectional view of the electric light xtureillustrated in Figure l,

Figure 5 is a front view of the face of the supporting portion of thefixture shown clamped to the top rail of a bed,

Figure 6 is a front or face view of the end of the handle showing thestuds which fit and lock in the clamping and holding portion of thefixture and showing the rear view of the refiector, A n

Figure 7 is an end view of a portion of the supporting part of thefixture and showing the lamp and handle in locked position,

Figur-e 8 is an enlarged sectional view of locking elements shown inFigure 4,

Figure 9 is a view showing the under side of the reflector and thehandle and illustrates the pull chains in the handle,

Figure 10 is an oblique sectional view showing the locking connectionbetween the handle and supporting portions of the fixture on the line10-10 in Figures 5 and 6,

Figure 11 is a side elevation of the assembly of a modified form ofelectric light fixture with clamp attached to be permanently secured ina wall fixture,

Figure l2 is a disassembled side view of the electric light fixture andsupport shown in Figure 11, and illustrates the electric light fixturebeing held separately from the support,

Figure 13 is a longitudinal cross sectional view of a supporting portionof the modified form of fixture and support and Figure 14 is a top viewof the electric light fixture in place in the modified form or' wallsupport.

Like parts throughout the various views are given the same referencecharacters.

As illustrated in Figures l to l() inclusive, of the drawings, theelectric light fixture comprises the clamping mechanism generallydesignated 20, the support 2l, the handle generally designated 22, thelatter carrying the reflector 23. The lamp socket 24 is shown inposition in the handle and the lamp bulb 25 is in position within thereflector.

As shown the electric light fixture is clamped to the top square tube orrail 26 of the bed 27. It will be obvious that the fixture may beclamped to a round ytube or rail of a bed or in fact any portion of abed to which the jaws of the clamp may be fitted. It will also beunderstood that the electric light fixture may be clamped to any kind offurniture, apparatus or support to which the jaws of the clamp may befixed.

The clamp of the fixture is provided with a pair of jaws 28 and 29 whichpreferably have the angularly disposed depending portions as shown.These depending portions or arms when brought toward each other by themeans about to be described, securely clamp and hold the fixture to thebed or other support.

In order to assist the clamp in maintaining a secure grip or hold on thebed or support, protectors 30 and 3l of suitable form and material, suchas sheet rubber, are used. By the employment of the rubber protectors,which preferably cover the entire inner faces of the clamp-arms, theelectric light fixture is prevented from rotating or from any movementon the rail of the bed, however smooth it may be.

Each of the depending arms of the clamp are provided with hollow tubeswhich extend into each other and telescope so as to permit any desiredadjustment of the two clamping arms. The outer clamping arm 29 isprovided witlY two telescopingtubes 32 and 33. rlhe tubes 32 and 33 aredriy en and permanently fit ed into apertures in the clamp arm 29, andextend entirely through the clamp arm 25) as particularly shown inFigure 3. it will be understood that the tubes 32 and 33 are immovablewith respect to the clamp arm The bore of the tubes 32 and 33 is smoothti. receive the closel.7 fitting tubes 34 aud 3i which are permanentlyiitted in the clamp arm 28 and extend entirely through the aper4 turesin the clamp arm 28, and through the U shaped member 36 on the innerside of which the tubes are turned and held.

The interior faces-ofi' the tubes 34 and 35 are screw threaded toreceive the long screws 37 and These screws are passed through thetub-es 32 and 33 into the tubes 34 and 35 to the desired position. Theclamp arms 28 and 29 are then brought to their desired position on thebed, table or other support. The screws 37 and 38 are provided with thepermanently attached hexagonal heads 39 and 40, and also the cup shapedwashers 4l and 42 to cover the apertures in the clamp arm 29 and theexposed ends of the tubes 32 and 33.

it will be understood that the cup shaped washers may be screw threadedon the screws 37 and 38, or they may be permanently secured to thescrews against the heads 39 and 40.

i ie rubber protector 30 is provided with apertures to enable the tubes34 and 35 to pass therethrough to enable the protectors to :,e Ilacedagainst the inner face of the clamp arm 28. The rubber protector 3l isalso pre ided with apertures te enable the s and 33 to pass therethroughso that the rubber protector may be fitted against the iner ce ot theclamp arm After sliding the arm 20 and the tubular Leif/,043'

extensions 3Q and 83 on the extensions Sai and 35, the screws in thetubular extensions 3d and 35 meanwhile remaining in the position towhich they have heen brought, the 5 clamp is set in position on the railQ6, or other support, and the clainp arin 29 and extensions 32 and 33slide on the extensions and 35 until the arms 28 and Q9 clainp the rail26. rlhe screws 37 and 38 are thereupon screwed into the tubularextensions 361. and 35 to securely balance and clainp the arnis Q8 `and29 against the rail Q6, or other support.

YAs a. general proposition in connection with hospital heds the clampand holder will usually remain on the hed in the saine positic-n inwhich it was originally placed but it will be understood that the clampand holder inay readily be moved to any part ot the bed, and the clanipbein adjustable may readilyY he itted and secured in position.

rlhe support 2l. d

is pivotally connected to the clainp generally designated 20 by niearsY. ll shaped nieinlier 35 and the pivot pin l screi' head The pivotpinel?) .is e with the head l5 and the reduced rl`he red ced stein i6 is tointo the screw threads in prior ot the screw head le-fi. The screw Y "elis provided with a head The nvot nin ifi and the screw head la are enibv the sleeve 4S.

.up Dort 2l is provided with the eX- ort-ions or flanges 49 which areapertured a d through wll `ch apertures the pivot pin `nd the screw headlll extend. The L red portions or flanges 4 9 are between shapednicniher 36 and the heads @l5 anc. 7 ot )the pin 43 the screw head elfi,resp I tively. rThe screw head 47 when turned w' raw the nin so thattight and snug lit o the various parts will he inade.

support il is also provided with a it. ot keyhole rots 50, 5l. 52 and 53iortne s eception or" the studs 54;, 5', 56 and 5? on the lainp iandlegenerally desand 59 are for the passage and c ifi/tion ot the locking`pin or stud 60 and the push button stein 6l. These studs or stemspermanently ailised, as by solder, to fiat locking spring 62, riveted at68 to the inain wall of the support 2l.

. i button stein 6l is provided with the hea il Gil which entendsoutwardly of the supa 2l and is positioned below the handle `e it is innornial position i` the support 2l. The support 2l is also provided inits upper portion with the large slot 65 having the enlarged opening'66. rlhe slot 65 is to enahie the cord 67 to be passed through it anointo the enlarged openingl 6G and thereupon permits the sleeve orthinible 69 to pass into and become seated the enlarged opening (3G ofthe support.

The handle 22 is composed of the cylindri cal container 69 which isformed with the annular reduced portion'70 at the lanip end. A ring 7lhaving,v an angular flange, is seated on the shoulder toi-ined by thereduced portion 70. fr washer' 72 is then placed on the ring 7l and theapertured reliector 23 is then placed in position against the washer.

Locking rings 73 are then placed in position against the reflector tohold the reflector 23 in place. The ring` 7l is provided with anout-ward screw thread and the rings 73 are provided with rcorrespending`interior screw threads. rldhe relieetor 23, the ring 7l with its ring`washer 72, and the locking rings .73 e arranged and held in such aposition tiat the reliector is trictiona ly held in place, ont isperniitted to rotate 860 degrees by the application of' a suitabledegree ot force.

t 24ris provided with the i i nble end 7 d which screw threaded on itsinterior to receive one end ot' the tubular cord extension pipe 7 5. Theouter end portion of the tubular cord extension pipe has exterior screwthreads tor connection with the end thinible 68. The end portion of theconductor 67 is passed through the thiinble 68, the tubular cordextension pipe 75, and to the lanip socket 24, where its end is properlyconnected to the lainp socket to supply current.

Th cylindrical holder 69 is provided with the longitudinal slot 76, theinner end of which slot enlarged to receive the pull chain thiinble 77secured in the lamp socket The lainp pull chains 78 and 79 extendthrough the thinible 77 into the socket 24 andA operate the lanip 25.

The cylindrical holder G9 is covered with several sections ot insulatedliber tubing;` 8O and 8l. The section ot liber tubing 8O is placed onthe outside ot the handle 69 beitore the socket Q41 is inserted into thehandle. ^`liter the socket 24, the tubular extension and the cord 67have been inserted in the handle they are placec at the end thereof, thepull chain thinihle pissing` along the slot 76. rlhe other section otliber tuhinp; is passed along the cord 67 and placed in positionabutting` the ber tubing section 80. The tiber tubes are cut out to fitaround the pull chain thiinble.'

A metallic cap 82 is titted on the end of the handle anc is secured tothe fiber tube 8l. i

and the metallic cylindrical holder 69, by a plurality of screws 823which pass through screw-threaded apertures in the flange of themetallic cap 82, the liber tube section Sl and the inetallic holder 59.

The metallic cap 82 which has the plurality oit studs 54, 55, 56 and 57,is also pr vided with plurality ot apertures Sil, 85, 86 and 87, whichare for the reception of the locking` pin 60 on the flat spring 62. Theapertures S4, 85, 89 and 87 are preferably spaced around the face of themetallic cap between the studs 54, 55, 56 and 57. As shown moreparticularly in Figure l0, the studs 54, 55, 56 and 57 have enlargedheads and reduced necks and are inserted and riveted into the metalliccap with portions of the necks with the heads thereon extending beyondthe face of the metallic cap.

lt will thus be seen that after the lamp socket extension tube and cordhave been inserted in the handle and the fiber tubes, and the metalliccap, with the light cord extending through it, has been secured inposition by the said screws, lirst having the end of the cord extensiontube screw threaded into the thimble in the metallic cap, the electriclight fixture is complete as a portable lamp structure and may thus beused when the conductor is properly connected in the lighting circuit.

Vlhen it is desired to place the electric light lixture, which has beenused as a portable lamp, in place in the support 2l, the conductor 67 ispassed. into the slot 65, to the enlarged opening 66 and the portableiixture is then pushed into place against the support 2l. At this timethe thimble 68 should be in alignment with the aperture 66, the heads etthe .stubs 54, 55, 56 and 57, should be in alignment with the enlargedportions of the keyhole slots 50, 5l, 52 and 58, respectively, and oneof the apertures 84, 85, 86 or 87 should be near the locking pin or stud60.

The face of the support 2l is thereupon brought directly against thefaceof the metallic cap 82. n this position the thimble 68 and the heads ofthe studs 54, 55, 56 and 57 extend through the aperture 66 and the slots50, 5l, 52 and 53, respectively, beyond the inner face oi the support2l. rlhe lamp lixture is then slightly rotated in the keyhole slots andin the opening 66 until the studs pass to the end of the restricted ornarrow portions of the slots 50, 5l, and 53, whereupon the locking pin60 attached to the flat spring 62 snaps into one of the apertures 84,85, 86 or 87.

In order to release the lamp structure from the support 2l, pressure isapplied on the button 64, and the stem 6l secured to the flat .spring 62to withdraw the locking stud or stem 60 from the particular aperture 84,85, 86 or 87. When this release has been effected the lamp structure isrotated slightly in the opposite direction around the thiiible 68 sothat the studs 54, 55, 56 and 57 pass frein the restricted or narrowportions of the lreyhole .slots 50, 51, 52 and 53 to the enlargedportions of the slots whereupon the fixture may be withdrawn from thesupport, the thimble 68 passing through the opening 66 and the conductor67 passing upwardly through th slot 65. rlfhe lamp structure thereuponagain becomes a. portable one and may be used for exploration andexamination as desired.

ln the modified structure illustrated in Figures ll to 14, inclusive,the same electric lamp structure and support as is shown in Figures l to10, inclusive, is employed. The difference in the two structures is thatinstead ot having the fixture provided with a clamping portion such asthe clamping portion 20, the fixture and support are attached to a Ushaped member 88 which in turn is riveted to a wall plate 89 by means ofthe rivets 90 and 91.

The wall plate 89 bearing the U shaped member which carries the support2l and the electric light fixture is preferably inserted back of theordinary wall plate 92 which covers the wall outlet box 93, with whichthe plug 94 is associated.

t will therefore be understood that in this last described structure theelectric light fixture is portable but the iixture support and theconnection with the wall plate is not portable but is permanently fixedin position.

The latter type of structure is especially adapted for physicians,surgeons and dentists7 ofiices, laboratories, garages and other placeswhere only the portable light fixture itself needs to be moved about.

It will also be understood that in addition to the portability of thehol-der portion of both forms of electric light fixtures, in each casethe holder portion may be swung downwardly or upwardly on the pivotconnections 43 and 44, if it is desired not to have the holder portionextending horizontally from the clamp and support.

Having thus described the invention what we claim and desire to secureby Letters Patent is:

l. In an electric light fixture the combination of a cylindrical holder,said holder being adapted to receive an electric light socket, saidholder being adapted to receive a reflector and at the other end a cap,a support for said holder attached to a clamping mechanism, said supportand the face of said cap being provided with coacting adjustable anddetachable means whereby said holder and reflector may be held invarious positions or may be entirely separated from said support andclamp.

2. In an electric light iixture the combinationy of a cylindricalholder, said holder being adapted to receive an electric light socket,said holder being adapted to receive a refiector at one end, and a capat the other end, clamping mechanism, a support for said holder attachedto said clamping mechanism, said support and the face of said cap beine'provided with coacting adjustable and detachable means whereby saidholder and reflector may be held in various positions or may be entirelyseparated from said support and clamp, said adjusting and detachingmeans consisting of a plurality of studs and slots spaced in said capand support.

support being provided with a plurality of keyhole slots, the enlargedheads of said studs on said being adapted to enter said keyhole slots insaid support and on turning in said keyhole slots said studs beineadapted to engage and to be held by said support in various positions.

l2. In an electric light fixture, the combination of a holder, saidholder being adapted to receive an electric light socket, said holderhaving a cap at one of its ends, a support for said holder, said capbeing arovided in its 'face with a plurality of studs, said supportbeing provided With a plurality of slots, said studs on said cap beingadapted to fit in said slots in said support whereby said holder may beheld in said support in various posi.- tions, said support beingprovided l lock comprising a spring pressed button, sari cap beingprovided with apertures, said spring pressed button being adapted tolock and unlock said holder and support.

13. In an electric light iXture the combination of a holder, said holderbeing adroted to receive an electric light socket, said holder having acap at one of its ends, a support for said holder, said cap being p1ovided in its face with a plurality of studs, said studs having necksand enlarged heads, said support being provided With a plurality of-eyhole slots, the enlarged heads of said studs on said cap beingadapted to enter said keyhole slots in said support and on turning insaid keyhole slots said studs being adapted to engage and to be held bysaid support in various positions, said support being provided with alock comprising a spring pressed button, said cap being provided Withapertures, said spring pressed button being adapted to lock and unlocksaid holder and support.

14. In an electric light liXture the combination of a holder, saidholder being adapted to receive an electric light socket, said holderhaving a cap at one of its ends, a support for said holder, said capbeing provided in its face With a. plurality of studs. said studs havingnecks and enlarged heads, said support being provided with a. pluralityof keyhole slots. the enlarged heads of said studs on said cap beingadapted to enter said keyhole slots in said support and on turning insaid keyhole slots, said studs being adapted to engage and to be held bysaid support in various positions, said support beino provided furtherWith a spring locking mechanism, said locking mechanism having a buttonfor locking and unlocking said support and holder, the head of saidbutton being beneath said cap when the holder and the support are inlocked position, said cap being provided with a plurality of aperturesand said spring lock mechanism being adapted to coact With either ofsaid apertures to lock and unlock said holder and support in variouspositions.

l5. In an electric light fixture the combination ofa holder, said'holder being adapted to receive an electric light socket, said holderhaving a cap at one of its ends, a support for said holder, said capbeing provided in its face With a plurality oi' studs, said studs havingnecks and enlarged heads, said support being provided with a pluralityof keyhole slots, the enlarged heads of said studs on said cap beingadapted to enter said keyhole slots in said support and on turning insaid keyhole slots, said studs being adapted to engage and to be held bysaid support in various positions, said support being provided furtherwith a spring locking mechanism, said locking mechanism having a buttonfor locking and unlocking said support and holder, the head of saidbutton being beneath said cap when the holder and the support are inlocked position, said cap being provided with a plurality of aperturesand said spring lock mechanism being adapted to coact With either ofsaid apertures to lock and unlock said holder and support in variouspositions, the apertures in the face of said cap being spaced betweenthe studs extending from said cap.

In Witness whereof, We hereunto subscribe our naines this 3rd day ofDecember A. D.,

WILLIAM P. CROOKETT. WILLIAM I). CROCKETT, JR.

